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Multi-Way Conventional loudspeakers with crossovers

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Old 25th December 2005, 04:48 PM   #11
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Some of the Sonicaps are directional; those with one gray and one white lead. (Check with the owner, he's nice and helpful.) I have no idea how a cap can be directional, but they clearly are. We used Zens?? Crescendoes?? in the midrange, and were not very happy with the colorations of either type; to over simplify, a bit bright or a bit dull. BUT antiparalleling got the colorations to cancel, and the result seemed quite neutral. The 100 uF mid highpass cap is made of 5 X 10 uF in each direction, and is very satisfactory. And the pile of white logs will be the first on your block to amaze your friends.
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Old 26th December 2005, 03:23 AM   #12
GM is offline GM  United States
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Greets!

I can't view the cap test, but here's some good reference info: http://members.aol.com/sbench102/caps.html

GM
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Old 26th December 2005, 11:33 PM   #13
Eton is offline Eton  United States
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$599.99 for a single 3.3uF 5% Capacitor?
Good Luck !
http://v-cap.com/tefloncapacitors.html
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Old 27th December 2005, 01:51 AM   #14
ScottG is offline ScottG  United States
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http://www.enjoythemusic.com/magazin...udiophile8.htm
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Old 16th January 2006, 09:45 PM   #15
hermanv is offline hermanv  United States
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Default Capacitors in crossovers

Based on a lot of listening tests there seems to be a most unfortunate relationship between film capacitor price and sound quality.

The unfortunate part is that the more they cost, the better they sound.

For (passive) crossover applications we found:
1. Foil is always superior to metallized.
2. Tin is better than aluminum (can't afford either copper or silver foil so who knows?).
3. Dielectric, worst to best (IMHO) Mylar or polyester, polystyrene, polypropylene, Teflon. (very close call between the polyprop and the polystyrene)
4. Multitab construction is superior.
5. Small values paralleled sound better.
6. Higher voltage ratings sound better.

If you are one who has heard no difference between various interconnect cables, don't bother with capacitors, the differences are quite similar to cable variations
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Old 16th January 2006, 10:25 PM   #16
soongsc is offline soongsc  Taiwan
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Default Re: Capacitors in crossovers

Quote:
Originally posted by hermanv
Based on a lot of listening tests there seems to be a most unfortunate relationship between film capacitor price and sound quality.

The unfortunate part is that the more they cost, the better they sound.

For (passive) crossover applications we found:
1. Foil is always superior to metallized.
2. Tin is better than aluminum (can't afford either copper or silver foil so who knows?).
3. Dielectric, worst to best (IMHO) Mylar or polyester, polystyrene, polypropylene, Teflon. (very close call between the polyprop and the polystyrene)
4. Multitab construction is superior.
5. Small values paralleled sound better.
6. Higher voltage ratings sound better.

If you are one who has heard no difference between various interconnect cables, don't bother with capacitors, the differences are quite similar to cable variations
How about oil caps such as Mudorf?
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Old 16th January 2006, 10:35 PM   #17
hermanv is offline hermanv  United States
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In the values we needed (10uF through 200uF) the oil filed were just not in the budget. Reports are they sound great, but I personally don't know.
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Old 16th January 2006, 11:28 PM   #18
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Hadn't noticed earlier, but I would put polystyrene above polyprop; I haven't heard teflon for a long time. No longer much around on the surplus markets, and out of price range otherwise.
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Old 16th January 2006, 11:48 PM   #19
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Some of my impressions of various cheap caps: http://www.ecp.cc/cap-notes.html

These were used for coupling, not in speakers, so ymmv.
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Old 17th January 2006, 04:25 PM   #20
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Quote:
Originally posted by hermanv
For (passive) crossover applications we found:
1. Foil is always superior to metallized.
2. Tin is better than aluminum (can't afford either copper or silver foil so who knows?).
3. Dielectric, worst to best (IMHO) Mylar or polyester, polystyrene, polypropylene, Teflon. (very close call between the polyprop and the polystyrene)
4. Multitab construction is superior.
5. Small values paralleled sound better.
6. Higher voltage ratings sound better.
Cyril Bateman's series of articles on capacitor distortion support each of Hermanv's findings except point 5 (to which Bateman does not speak). For those interested, I posted certain of Bateman's findings in another thread. Search "Bateman."
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